SB2022091460 - Multiple vulnerabilities in Dell EMC NetWorker vProxy
Published: September 14, 2022 Updated: February 3, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 25 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2021-26388)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation in the BIOS directory that allows for searches to read beyond the directory table copy in RAM. A local user can perform a denial of service (DoS) attack.
2) Input validation error (CVE-ID: CVE-2022-1271)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation when processing filenames with two or more newlines. A remote attacker can force zgrep or xzgrep to write arbitrary files on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
3) Out-of-bounds read (CVE-ID: CVE-2022-1586)
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a boundary condition in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file. A remote attacker can pass specially crafted data to the application, trigger out-of-bounds read error, gain access to sensitive information or perform a denial of service attack.
4) Out-of-bounds write (CVE-ID: CVE-2022-1304)
The vulnerability allows a local attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input. A local attacker can use a specially crafted filesystem, trigger out-of-bounds write and execute arbitrary code on the target system.
5) UNIX symbolic link following (CVE-ID: CVE-2021-28153)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue, when g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
6) Information disclosure (CVE-ID: CVE-2022-21151)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to an error during processor optimization removal or modification of security-critical code. A local privileged user can gain access to potentially sensitive information.
7) SQL injection (CVE-ID: CVE-2022-29155)
The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data in the experimental back-sql backend to slapd during an LDAP search operation when the search filter is processed. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
8) Incorrect Implementation of Authentication Algorithm (CVE-ID: CVE-2022-27782)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way libcurl handles previously used connections in a connection pool for subsequent transfers. Several TLS and SSH settings were left out from the configuration match checks, resulting in erroneous matches for different resources. As a result, libcurl can send authentication string from one resource to another, exposing credentials to a third-party.
9) Infinite loop (CVE-ID: CVE-2022-27781)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop when handling requests with the CURLOPT_CERTINFO option. A remote attacker can consume all available system resources and cause denial of service conditions.
10) Integer overflow (CVE-ID: CVE-2022-29824)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in several buffer handling functions in buf.c (xmlBuf*) and tree.c (xmlBuffer*). A remote attacker can pass specially crafted multi-gigabyte XML file to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
11) Resource exhaustion (CVE-ID: CVE-2017-16932)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in parser.c function due to improper handling of certain parameter entities. A remote attacker can supply specially constructed XML data, trigger resource exhaustion and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
12) Cryptographic issues (CVE-ID: CVE-2021-46744)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a ciphertext side channel attack where data in specific cryptographic algorithms can be inferred in a SEV guest by monitoring the ciphertext values over time. A local user with access to the hypervisor can gain access to sensitive information, related to the guest OS.
13) Buffer overflow (CVE-ID: CVE-2021-26378)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
14) Out-of-bounds write (CVE-ID: CVE-2021-26312)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error caused by failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU). A local user can force an IO device to write to memory it should not be able to access and execute arbitrary code with elevated privileges.
15) Input validation error (CVE-ID: CVE-2021-26376)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in System Management Unit (SMU) FeatureConfig. A local user can re-enable certain features, which can lead to denial of service.
16) Buffer overflow (CVE-ID: CVE-2021-26375)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in System Management Unit (SMU). A local user can trigger memory corruption and perform a denial of service (DoS) attack.
17) Buffer overflow (CVE-ID: CVE-2021-26373)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the System Management Unit (SMU). A local user can trigger a system voltage malfunction and perform a denial of service (DoS) attack.
18) Buffer overflow (CVE-ID: CVE-2021-26372)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
19) Buffer overflow (CVE-ID: CVE-2021-26364)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in an SMU mailbox register. A local user can force SMU to read outside of the SRAM address range and perform a denial of service attack.
20) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2021-26350)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition in the System Management Unit (SMU). A local user can obtain and manipulate the address of a message port register and perform a denial of service attack.21) Security features bypass (CVE-ID: CVE-2021-26349)
The vulnerability allows an attacker to compromise the guest OS.
The vulnerability exists due to failure to assign a new report ID to an imported guest. This can result in an SEV-SNP guest VM being tricked into trusting a dishonest Migration Agent (MA).
22) Resource management error (CVE-ID: CVE-2021-26348)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU). A local user can force the IO device into writing data to memory it should not be able to access.
23) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2021-26347)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition in the System Management Unit (SMU). A local user can force the DMA (Direct Memory Access) to reference an invalid DRAM address and perform a denial of service attack.
24) Resource management error (CVE-ID: CVE-2021-26342)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to the CPU may fail to flush the Translation Lookaside Buffer (TLB) in SEV guest VMs. A local user can execute a particular sequence of operations that includes creation of a new virtual machine control block (VMCB) and disclose the SEV guest memory contents.
25) Input validation error (CVE-ID: CVE-2021-26339)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in the AMD CPU’s core logic when using specific code from an unprivileged VM. A remote user with low-privileged access to guest OS can send a specific x86 instruction sequence that triggers CPU core hang.
Remediation
Install update from vendor's website.